Add to several existing unittests and add some new tests all related to testing the _remove_all_* hooks
Add to several existing unittests and add some new tests all related to testing the _remove_all_* hooks

bigfix/sequel,gferguson-gd/sequel,nju520/sequel,mpalmer/sequel,freshpay/sequel,dennis-d/custom_sequel,offshore-safety/sequel,reubano/sequel,pfarrell/sequel,t-morgan/sequel,pfarrell/sequel,beni55/sequel,beni55/sequel,offshore-safety/sequel,gferguson-gd/sequel,davidbegin/sequel,tmm1/sequel,reubano/sequel,Marketcircle/sequel,knut2/sequel,offshore-safety/sequel,yazshel/sequel,seeARMS/sequel,uhoh-itsmaciek/sequel,knut2/sequel,mpalmer/sequel,uhoh-itsmaciek/sequel,chef/sequel,nicohvi/sequel,dennis-d/custom_sequel,freshpay/sequel,seeARMS/sequel,davidbegin/sequel,t-morgan/sequel,nicohvi/sequel,yazshel/sequel,nju520/sequel